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Ultra-high molecular weight polyethylene ultrafine fiber and preparation method thereof

An ultra-high molecular weight, ultra-fine fiber technology, applied in the field of fiber materials, can solve the problems of not having the conventional spinning technology of HMWPE polyethylene fiber, etc., and achieve the effect of simple and efficient preparation method, high application characteristics, and good macromolecular arrangement structure.

Inactive Publication Date: 2012-08-15
JIANGNAN UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

At present, there is no conventional spinning technology that can produce ultra-fine HMWPE polyethylene fibers

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0020] An ultra-high-molecular-weight polyethylene microfiber is characterized in that it is 150-350 nanometer ultra-fine fiber spun from ultra-high-molecular-weight polyethylene with a molecular weight of 2 million.

[0021] The preparation method of this ultra-high molecular weight polyethylene microfiber, its steps are as follows:

[0022] (1) The ultra-high molecular weight polyethylene raw material of 1.5 million ultra-high molecular weight polyethylene with a molecular weight of 4% by mass percentage of the solution and the mixed antioxidant B225 of 1% by mass of the solution are added to the mineral oil solvent, and the temperature is 135 ° C. Stir evenly under low pressure to prepare ultra-high molecular weight polyethylene spinning solution;

[0023] (2) ultrasonically treating the ultra-high molecular weight polyethylene spinning solution configured in step (1), the ultrasonic frequency is 20KHz, the power is 500W, and the ultrasonic time is 20 minutes;

[0024] (3)...

Embodiment 2

[0027] An ultra-high molecular weight polyethylene ultrafine fiber is characterized in that it is an ultrafine fiber with a diameter of 300 to 700 nanometers spun from ultra-high molecular weight polyethylene with a molecular weight of 4 million;

[0028] The preparation method of this ultra-high molecular weight polyethylene microfiber, its steps are as follows:

[0029] (1) The ultra-high molecular weight polyethylene raw material with a molecular weight of 4 million and the antioxidant 1010 accounting for 0.5% of the solution by mass percentage are added to the paraffin solvent, and uniformly Stir to prepare ultra-high molecular weight polyethylene spinning solution;

[0030] (2) ultrasonically treating the ultra-high molecular weight polyethylene spinning solution configured in step (1), the ultrasonic frequency is 25KHz, the power is 1200W, and the ultrasonic time is 5 minutes;

[0031] (3) Transfer the ultra-high molecular weight polyethylene spinning solution prepared ...

Embodiment 3

[0034] An ultra-high molecular weight polyethylene superfine fiber is characterized in that it is 800-1200 nanometer diameter ultra-high molecular weight polyethylene superfine fiber spun from ultra-high molecular weight polyethylene with a molecular weight of 6 million.

[0035] The preparation method of this ultra-high molecular weight polyethylene microfiber, its steps are as follows:

[0036] (1) Add the ultra-high molecular weight polyethylene raw material with a mass percentage of 0.5% of the solution and the antioxidant CA with a mass percentage of 0.05% of the solution into the kerosene solvent, and stir evenly at a temperature of 160°C to prepare ultra-high Molecular weight polyethylene spinning solution;

[0037] (2) ultrasonically treating the ultra-high molecular weight polyethylene spinning solution configured in step (1), the ultrasonic frequency is 40KHz, the power is 2000W, and the ultrasonic time is 1 minute;

[0038] (3) Transfer the polymer spinning solutio...

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Abstract

The invention discloses an ultra-high molecular weight polyethylene ultrafine fiber. The invention is characterized in that the ultra-high molecular weight polyethylene ultrafine fiber is prepared from polyethylene with the molecular weight of more than 1 million, and the diameter of the ultrafine fiber is 80 nanometers-2 micrometers. The preparation method comprises the following steps: adding 0.1-5 wt% polyethylene with the molecular weight of more than 1 million and 0.005-2 wt% antioxidant into a corresponding solvent to prepare a polyethylene spinning liquid at 130-180 DEG C; and carrying out ultrasonic processing on the prepared spinning liquid, spinning into an extractant under certain electrostatic spinning conditions to obtain a jelly fiber, and storing the jelly fiber in the extractant for 1-5 days until the solvent in the fiber is leached out, thereby obtaining the ultra-high molecular weight polyethylene ultrafine fiber of which the diameter is 80 nanometers-2 micrometers.

Description

technical field [0001] The invention belongs to the field of fiber materials. It relates to an ultra-high molecular weight polyethylene fiber and a preparation method thereof, in particular to an ultra-high molecular weight polyethylene ultrafine fiber and a preparation method thereof. Background technique [0002] Ultra-high molecular weight polyethylene (UHMWPE) fiber is the third generation of high-strength and high-modulus high-tech special fiber after carbon fiber and aramid fiber. It is one of the key research and development products of the country's "Eleventh Five-Year Plan". UHMWPE has high strength, high modulus, excellent resistance to tension and bending fatigue, high wear resistance, good chemical resistance and weather resistance, high energy absorption, low electrical conductivity, transparent to X-rays and certain Excellent properties such as water resistance, so it has broad application prospects in the fields of high-performance lightweight composite mater...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): D01F6/46D01F1/10D01F11/06D01D5/00
Inventor 万玉芹王鸿博高卫东
Owner JIANGNAN UNIV
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